The recoil shadow anisotropy method

We report here on a new method, the Recoil Shadow Anisotropy Method (RSAM), which can be used for identifying isomers in the nanosecond range and meas uring their half-lives. This method can be applied to in-beam experiments u sing thin targets and multidetector arrays which include collimated composi te detectors. The RSAM was first developed for data obtained with Eurogam I I. A number of previously known isomers with half lives ranging from 0.5 to 17 ns have been re-measured and several new isomeric states have been disc overed.